Writers have their sources, believe it or not. Just because Saban didn't allow his assistant coaches to speak doesn't mean they (or anyone else in the front office) weren't doing so in confidential, especially since a lot of his staff and front office weren't thrilled with him. This also isn't the first time information has leaked out that Saban wasn't overjoyed about Culpepper's work ethic.
Whether it's true or not remains to be seen, but to just blindly dismiss it is naive.
....your the one who wrote the article, arent you?